Mozilla Foundation Security Advisory 2009-65

Crashes with evidence of memory corruption (rv:1.9.1.6/ 1.9.0.16)

Announced

December 15, 2009

Reporter

Mozilla developers and community

Impact

Critical

Products

Firefox, SeaMonkey, Thunderbird

Fixed in

Firefox 3.0.16

Firefox 3.5.6

SeaMonkey 2.0.1

Thunderbird 3.0.1

Description

Mozilla developers and community members identified and fixed
several stability bugs in the browser engine used in Firefox and other
Mozilla-based products. Some of these crashes showed evidence of
memory corruption under certain circumstances and we presume that with
enough effort at least some of these could be exploited to run
arbitrary code.

Workaround

Disable JavaScript until a version containing these fixes can be
installed.